const http=require('http')
const server=http.createServer()

server.on('request',(req,res)=>{
	const url = req.url
	let content = '<h1>404</h1>'
	if(url === '/' || url === '/index.html'){
		content = '<h1>首页</h1>'
	}else if(url === '/about.html'){
		content = '<h1>关于页面</h1>'
	}
	
	res.setHeader('Content-Type','text/html;charset=utf-8')
	res.end(content)
})

server.listen(9000,()=>{
	console.log('server running on 9000 port.')
})